WO2020248540A1 - Remote shutdown station system of nuclear power plant, and method for putting same into use - Google Patents

Abstract

Provided are a remote shutdown station system of a nuclear power plant, and a method for putting same into use. The system comprises: a remote shutdown station (10), an operator workstation module (100) arranged in the remote shutdown station (10), and switching unit assemblies (200) arranged inside and outside the remote shutdown station (10), wherein the operator workstation module (100) is used for receiving and processing, when a main control room is not habitable, monitoring information identical to that of the main control room; the switching unit assemblies (200) are connected to a logic control cabinet and are used for sending switching instructions according to the different states of a nuclear power plant; the logic control cabinet is in communication connection with the main control room and the operator workstation module (100), and is used for receiving the switching instructions, performing logical processing on the switching instructions, and then switching to the main control room or the operator workstation module (100) to receive and process monitoring information in a DCS monitoring network of the nuclear power plant. According to the system and the method for putting same into use, the problem that some process system logic has to be forced to be automatic when switching to the remote shutdown station system due to limited monitoring means is solved, thereby enlarging the monitoring range of a monitoring function.

Description

Nuclear power plant remote shutdown station system and commissioning method Technical field

The invention relates to the technical field of nuclear power plant operation, in particular to a nuclear power plant remote shutdown station system and a commissioning method.

Background technique

The remote shutdown station is the only centralized place for back-up monitoring and control when the main control room cannot reside, so it plays a very important role in the operation of nuclear power plants, and plays a key role in maintaining the safety of nuclear power plants and reducing the probability of nuclear accidents. When it is impossible to stay in the main control room of the nuclear power plant, there is no remote shutdown station or when it is required to be put into operation, the nuclear power plant will be in an uncontrollable state without supervision. The consequences can be imagined and will greatly endanger nuclear safety And the public environment may cause irreversible social impact; if the remote shutdown station plan is not sufficient and reliable, it will also limit the means to bring in and maintain the safe state of nuclear power plants, which may affect the safety of nuclear power plants. The remote shutdown station plays a very important role in the operation of nuclear power plants. Therefore, the functional objectives, safety principles, human factors engineering principles, operation organization, space and configuration, man-machine interface, and main control room of the remote shutdown station are required. The switching and isolation, environmental conditions and other aspects of the system are fully considered and designed.

In the prior art, one of the technical solutions is the remote shutdown station solution that uses conventional equipment for monitoring and control. It is limited by the equipment scale of the hardware tray. The remote shutdown station is a small space isolated by iron fences. There is no way to talk about the human comfort of the environment and the monitoring functions it provides are limited. The other required functions can only be completed by local operation or switching the process system to automatic logic. Moreover, there is no shutdown button at the remote shutdown station to provide fast shutdown function, which cannot fully meet the requirements of regulations and standards. Without an independent enclosed space, it is impossible to create a comfortable human factor environment and improve the human factor performance of operators.

Another technical solution is: a remote shutdown station using DCS technology. The technical shortcomings of this solution mainly include: only two operator workstations are not completely matched with the operating organization; it does not have an emergency shutdown function and cannot be well satisfied. The requirements of regulations and standards; the room is a space separated by the rear wall, which is located on the earthquake expansion joint of the factory building is not conducive to the stable placement of the equipment; fire monitoring cannot be performed; the switching logic of the main control room and the remote shutdown station cannot be distinguished The main control room and remote shutdown station workstation terminals increase the risk of false commands issued by the main control room operator workstation; the remote shutdown station and the main control room cable path are not completely independent and do not meet the requirements of regulations and standards; the room is located in the regular inspection room Check the convenient path, and the room can be freely entered and exited, so irrelevant personnel frequently enter and exit the room, which may affect the safety of the remote shutdown station equipment.

Therefore, in order to improve the human performance and safety performance of nuclear power plants, it is urgent to find a remote shutdown station system and commissioning method for nuclear power plants to fully and fully meet the requirements of remote shutdown of nuclear power plants.

Summary of the invention

Aiming at technical problems such as insufficient reliability and safety of remote shutdown stations in the prior art, which leads to increased risks of safe operation of nuclear power plants, the present invention provides a nuclear power plant remote shutdown station system and a commissioning method.

The technical solution proposed by the present invention in response to the above technical problems is as follows: a nuclear power plant remote shutdown station system, including: a remote shutdown station arranged on the unconventional inspection and plant evacuation path of the safety plant, and arranged on the remote shutdown station. The operator workstation module in the reactor station and the switching unit components arranged inside and outside the remote shutdown station; the operator workstation module is connected to the nuclear power plant DCS monitoring network for receiving and processing when the main control room cannot be accommodated The same monitoring information as the main control room; the switching unit component is connected to the logic control cabinet, and is used to issue switching instructions to the logic control cabinet according to different states of the nuclear power plant. The logic control cabinet is connected to the main control room and the operator The workstation module communication connection is used to receive the switching instruction and perform logical processing on the switching instruction and then switch to the main control room or the operator workstation module to receive and process the monitoring information in the DCS monitoring network of the nuclear power plant.

In the above-mentioned remote docking station system of the present invention, the switching unit assembly includes a first switching unit, a second switching unit, and a third switching unit, and the first switching unit, the second switching unit, and the third switching unit are respectively Connected to the logic control cabinet, the logic control cabinet is used to switch to the operator when the main control room cannot reside in the abnormal state of the nuclear power plant and at least two switching units issue instructions to switch to the operator workstation module The workstation module receives and processes the monitoring information, and at the same time, the main control room is automatically locked; in the normal state of the nuclear power plant, and when at least two switching units issue instructions to switch to the main control room, switch to the main control room for monitoring Information is received and processed, and at the same time, the operator workstation module is automatically locked.

In the above-mentioned remote shutdown station system of the present invention, the first switching unit is arranged in the remote shutdown station, the second switching unit is arranged outside the remote shutdown station, and the third switching unit is arranged at The main control room is used to prevent accidents in the same area from causing three switching units to fail simultaneously.

In the above-mentioned remote docking station system of the present invention, the operator workstation module includes a first operator workstation, a second operator workstation, and a crew leader workstation. The crew leader workstation is used to receive the same as the main control room operator workstation. And monitor the monitoring information; the crew leader workstation can also be used to authorize the first operator workstation and the second operator workstation; the first operator workstation and the second operator workstation are used Receive the same monitoring information as the operator workstation in the main control room, and process part of the monitoring information, and process all the monitoring information after authorization by the crew leader workstation.

In the above-mentioned remote docking station system of the present invention, the first operator workstation, the second operator workstation and the crew leader workstation respectively include 4 widescreen displays and 4 safety-level operation terminals, and the 4 widescreen displays are used for Receive and display the monitoring information, and transmit the security level monitoring information in the monitoring information to the 4 security level operation terminals, the 4 security level operation terminals are used to receive and process the security level monitoring information, and The 4 widescreen displays and 4 safety-level operation terminals are the same as the man-machine interface of the operator workstation in the main control room.

In the above-mentioned remote shutdown station system of the present invention, the remote shutdown station system further includes a fire automatic alarm system graphic workstation module arranged in the remote shutdown station, and the fire automatic alarm system graphic workstation module includes a fire alarm control unit and Graphic and text workstation unit, the input end of the automatic fire alarm control unit is connected with fire detectors arranged at various positions of the nuclear power plant, and is used to receive fire information monitored by the fire detector; the output end of the automatic fire alarm control unit They are respectively connected with the graphic workstation unit and the local simulation panels set up at various places of the nuclear power plant, and are used to transmit the fire information to the graphic workstation unit for display in graphic form, for the operator to understand the fire situation, and also to synchronize The fire information is transmitted to the local simulation panel for the local simulation panel to send out sound and light alarm information to remind the operator to pay attention.

In the above-mentioned remote storage station system of the present invention, the remote storage station further includes door 1 and door 2 for allowing authorized operators to enter the remote storage station, and the first door is set close to the fire. On the side of the graphic workstation module of the automatic alarm system, the No. 2 door is arranged on the side close to the operator workstation module to improve the safety of the remote docking station system.

In the above-mentioned remote storage station system of the present invention, the remote storage station system further includes a first communication device, a second communication device, a third communication device, and a fourth communication device arranged in the remote storage station, so The first communication device and the third communication device are respectively arranged on the left side of the first operator workstation and the crew leader workstation, the second communication device is arranged on the right side of the second operator workstation, and the first Four communication equipment is arranged between the first operator workstation and the second operator workstation for the operator to communicate with the outside world.

In the above-mentioned remote docking station system of the present invention, the remote docking station system further includes a printer module arranged in the remote docking station, and the printer module is connected to the operator workstation module for controlling the operator The monitoring information in the worker workstation module is printed.

In the above-mentioned remote shutdown station system of the present invention, the remote shutdown station system further includes an emergency shutdown module arranged in the remote shutdown station, and the emergency shutdown module is connected to a shutdown circuit breaker for emergency shutdown. heap.

In the above-mentioned remote storage station system of the present invention, the cable path of the remote storage station system and the cable path of the main control room are independent of each other.

In the above-mentioned remote shutdown station system of the present invention, the noise of the remote shutdown station system does not exceed 65dB, and the average illuminance of the remote shutdown station system under normal lighting conditions is not less than 300 Lux; under normal lighting failure conditions for a single train The illuminance of the core operating area is not less than 200Lux.

In the above-mentioned remote docking station system of the present invention, the cable entry mode of the equipment in the remote docking station system is down-entry, which is used to improve the aesthetics and comfort of the remote docking station system.

In addition, the present invention also provides a method for commissioning a nuclear power plant remote shutdown station, which includes the following steps:

1) When the main control room cannot stay in the abnormal state of the nuclear power plant, quickly press the emergency shutdown and shutdown buttons in the main control room to keep the unit in a relatively safe state;

2) The main control room operator evacuates the main control room to the remote shutdown station, switches the switching unit component to the remote shutdown station mode in the evacuation path and the remote shutdown station, and blocks the DCS signal of the main control room;

3) In the remote shutdown station, the operator uses the operator authority to log in to the first operator workstation and the second operator workstation, and uses the crew captain authority to log in to the crew commander workstation, and at the same time, log in to the first operator workstation and the second operator workstation. The safety-level operation terminal switches to the operation mode through its own switch;

4) Use workstations to perform power plant monitoring and control functions to make the unit withdraw and stabilize in the refueling cold shutdown state.

As an improvement of the method for commissioning a remote shutdown station of a nuclear power plant of the present invention, the switching unit assembly includes a first switching unit, a second switching unit, and a third switching unit, and the first switching unit is set at the remote shutdown. In the storage station, the second switching unit and the third switching unit are respectively arranged outside the remote shutdown station; in step 2), at least two of the three switching units only need to be switched to the remote shutdown station mode , You can block the DCS signal in the main control room.

As an improvement of the method for commissioning the remote shutdown station of the nuclear power plant of the present invention, the remote shutdown station system includes the first door and the second door arranged oppositely, and the second switching unit is arranged on the wall outside the first door The third switching unit is set on the wall outside the second door.

The technical solution provided by the present invention has the following beneficial effects: the present invention provides a solution for technical problems such as the lack of reliability and safety of remote shutdown stations in the prior art, leading to increased risks of safe operation of nuclear power plants, etc. The nuclear power plant remote shutdown station system and its commissioning method adopt digital control system technology and equipment to receive and process the same monitoring information as the main control room operator workstation in the remote shutdown station system, enhancing the monitoring function of the remote shutdown station It also reduces the dependence on local operations and solves the problem that some process system logic must be forced to automatically switch to the remote shutdown station due to limited monitoring means; the crew leader’s workstation is added to better meet the operational organization and Operation and maintenance methods; and the crew leader workstation is located behind the operator workstation, which is conducive to the crew leader to control the monitoring of the power plant; a hardware shutdown module is designed in the remote shutdown station system to perform fast shutdown functions; and Two switching units are placed in different areas, which effectively reduces the probability of common cause failure of the switch; access control is designed in the remote shutdown station system to effectively prevent unauthorized personnel from entering the remote shutdown station and affect the safety of the remote shutdown station and power plant; In addition, the access control adopts the design scheme that the access control is invalid in the case of power loss, so as to avoid the situation that the remote shutdown station cannot be entered due to power loss; the present invention designs a communication unit to provide communication means and functions with the outside world; the present invention also sets fire automatic The alarm graphic workstation meets the fire monitoring requirements; the present invention also designs the main control room to be automatically locked when the switching command is executed, which effectively reduces the probability of the main control room issuing false commands during the non-resident period and thus affects the safety of the power plant; and remote shutdown The equipment cables in the station system adopt the way of lower entry, which effectively improves the aesthetics and comfort of the room.

Description of the drawings

Figure 1 is a schematic structural diagram of a nuclear power plant remote shutdown station system provided by Embodiment 1 of the present invention;

2 is a detailed structural diagram of a nuclear power plant remote shutdown station system provided by Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of an operator workstation module of a nuclear power plant remote shutdown station system provided by the first embodiment of the present invention;

4 is a schematic diagram of a graphic workstation module and a system diagram of an automatic fire alarm system for a nuclear power plant remote shutdown station system according to Embodiment 1 of the present invention;

Fig. 5 is a schematic diagram of a cable path of a nuclear power plant remote shutdown station system according to the first embodiment of the present invention;

Fig. 6 is a flowchart of a method for setting a remote shutdown station of a nuclear power plant according to the second embodiment of the present invention.

Fig. 7 is a detailed structural diagram of a remote shutdown station system of a nuclear power plant according to Embodiment 3 of the present invention.

Detailed ways

In order to solve the technical problems of the lack of reliability and safety of remote shutdown stations in the prior art, leading to increased risks of safe operation of nuclear power plants, the present invention aims to provide a remote shutdown station system for nuclear power plants. The core idea is Yes: Adopt digital control system technology and equipment to receive and process the same monitoring information as the operator workstation in the main control room in the remote shutdown station system, enhance the monitoring function and monitoring scope of the remote shutdown station, and reduce the dependence on local operations , Increase the crew leader workstation to better meet the requirements of operation organization and operation and maintenance methods; and the crew leader workstation is located behind the operator workstation, which is conducive to the crew leader to control the monitoring of the power plant; design hardware shutdown in the remote shutdown station system The module can perform the function of fast shutdown; and the three switching units are placed in different areas, which effectively reduces the probability of common cause failure of the switch; the invention also sets up an automatic fire alarm graphic workstation to meet the fire monitoring requirements; The invention also designs that the main control room is automatically locked when the switching command is executed, which effectively reduces the probability that the main control room will issue a false command during the non-resident period and affect the safety of the power plant. In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Example one

The present invention provides a nuclear power plant remote shutdown station system, as shown in Figure 1: including a remote shutdown station 10, an operator workstation module 100 arranged in the remote shutdown station 10, and a remote shutdown station 10 Internal and external switching unit assembly 200.

In the present invention, the remote shutdown station 10 is arranged on the unconventional inspection and plant evacuation path of the safety plant to prevent irrelevant personnel from entering and exiting the remote shutdown station 10, and further ensures the safe operation of the nuclear power plant remote shutdown station system. The operator workstation module 100 is connected to the DCS monitoring network of the nuclear power plant, and is used to receive and process the same monitoring information as the main control room when the main control room cannot be accommodated; it enhances the monitoring function and monitoring range of the nuclear power plant remote shutdown station system, It reduces the dependence on on-site operation and solves the problem that some process system logic must be forced to be automatically automatically switched to the remote shutdown station due to limited monitoring means. The switching unit assembly 200 is connected to the logic control cabinet and is used to issue switching instructions to the logic control cabinet according to different nuclear power plant states. The logic control cabinet is respectively connected to the main control room and the operator workstation module 100 for communication and is used to switch to The main control room or operator workstation module 100 receives and processes monitoring information in the DCS monitoring network of the nuclear power plant.

Furthermore, it can be seen from FIG. 1 that the switching unit assembly 200 includes a first switching unit 210, a second switching unit 220, and a third switching unit 230. The first switching unit 210, the second switching unit 220, and the third switching unit 230 They are all connected to the logic control cabinet for issuing switching instructions to the logic control cabinet according to the state of the nuclear power plant. The logic control cabinet is respectively connected to the operator workstation module 100 and the main control room in communication. The logic control cabinet is used to switch to the operator workstation module 100 to receive and process the monitoring information when the main control room cannot reside in the abnormal state of the nuclear power plant and at least two switching units issue instructions to switch to the operator workstation module 100 ; At the same time, the main control room is automatically locked; the logic control cabinet is also used to switch to the main control room to receive and process the monitoring information when the nuclear power plant is in the normal state and at least two switching units issue instructions to switch to the main control room At the same time, the operator workstation module 100 is automatically locked. It should be noted that when switching to the operator workstation module 100, the main control room is locked and the monitoring information cannot be processed. The main control room is in browse mode and cannot be forced to log in with the operation authority and then execute the control function, which effectively reduces the main control room. The probability of issuing false orders during non-residential periods affects the safety of power plants. But what needs to be explained is: when the main control room is automatically locked, the shutdown button in the main control room can work normally, used for shutdown and shutdown in emergency situations, ensuring that the main control room can still be stopped at the first time in emergency situations. Reactor and shutdown further ensure the safety of nuclear power plant operations.

Furthermore, it can be seen in conjunction with FIG. 2 that the first switching unit 210 is arranged in the remote docking station 10, close to the operator workstation module 100, which is convenient for the operator to switch; the second switching unit 220 is arranged at the remote docking station On the outer wall 10 outside, the third switching unit 230 is set outside the main control room to prevent the three switching units from failing at the same time due to accidents in the same area, effectively reducing the common cause failure probability of the switching switches.

Furthermore, it can be seen from FIG. 2 that the operator workstation module 100 includes a first operator workstation 110, a second operator workstation 120, and a crew leader workstation 130. The crew leader workstation 130 is used to receive and communicate with the main control room operator workstation. The same monitoring information, and monitor the monitoring information; among them, the crew leader workstation 130 can also be used to authorize the first operator workstation 110 and the second operator workstation 120; the first operator workstation 110 and the second operator workstation 120 It is used to receive the same monitoring information as the operator workstation in the main control room and process part of the monitoring information, and process all the monitoring information after authorization by the crew leader workstation 130. Specifically: the first operator workstation 110 and the second operator workstation 120 are located in the front row and are in control mode, and are used to issue operation instructions to field devices; the crew leader workstation 130 is located in the rear row and is in the monitoring mode, which is beneficial to monitor the entire The status of the power plant better meets the requirements of operation organization and operation and maintenance methods.

Further, the remote shutdown station system also includes an automatic fire alarm system graphic workstation module 400 arranged in the remote shutdown station 10. The automatic fire alarm system graphic workstation module 400 is used to meet the requirements of fire monitoring and integrate fire information into The form of graphics and text is presented for the operator to intuitively judge.

Furthermore, as can be seen from Figure 2, the nuclear power plant remote shutdown station system also includes an emergency shutdown module 300 arranged in the remote shutdown station 10, and the emergency shutdown module 300 is connected to the site shutdown circuit breaker of the nuclear power plant. For emergency shutdown in an emergency, it is beneficial to improve the safety of nuclear power plant operation. The emergency shutdown module 300 can be a button. When the button is pressed, the shutdown circuit breaker is turned off to realize an emergency shutdown.

Further, the remote shutdown station system also includes door 1 510 and door 2 520, which are used to allow authorized operators to enter the remote shutdown station 10, and door 1 510 is set close to the automatic fire alarm system graphic workstation module 400. On the other hand, the second door 520 is set on the side close to the operator workstation module 100. The first door 510 and the second door 520 are arranged relative to each other. On the one hand, it can meet the evacuation requirements, and on the other hand, it can effectively avoid the room with only one door and it happens to be unable to The problem that affects evacuation and access to the remote docking station when the door is opened, especially to meet the needs of emergency evacuation from the remote docking station when the main control room cannot be accommodated; the safety of the remote docking station system is improved by setting two doors . Specifically, the first door 510 and the second door 520 are respectively provided with a first access control unit 610 and a second access control unit 620, which are used to prevent unauthorized persons from entering the remote docking station 10, and when the first access control unit 610 and the second door When the second access control unit 620 loses power, the first access control unit 610 and the second access control unit 620 fail. The operator can directly enter the remote docking station 10 without authorization to avoid the situation that the remote docking station 10 cannot be entered due to power loss. Improved the safety of the remote shutdown station system.

In the embodiment shown in FIG. 2, the third switching unit 230 is arranged outside the door of the main control room on the upper floor, but in a different embodiment, as shown in FIG. 7, the third switching unit 230 can also be arranged on the second floor. The wall outside door 520 and the second switching unit provided on the wall outside door 510 are located in a different fire compartment. This arrangement has the following advantages: 1) The three switching units are located in different fire compartments, which can prevent the loss of three switching units due to fire and other reasons at the same time, which effectively reduces the probability of common cause failure of the switch; 2) The positions of the three switching units are again Relatively centralized, it is convenient to switch the switch operation in the emergency situation of losing the main control room and commissioning the remote shutdown station.

Further, the remote docking station system further includes a first communication device 710, a second communication device 720, a third communication device 730, and a fourth communication device 740 arranged in the remote docking station 10. The first communication device 710 and the The three communication devices 730 are respectively arranged on the left side of the first operator workstation 110 and the crew leader workstation 130, the second communication device 720 is arranged on the right side of the second operator workstation 120, and the fourth communication device 740 is arranged on the first operator Between the workstation 110 and the second operator workstation 120, the operator communicates with the outside world. Among them, the first communication device 710, the second communication device 720, the third communication device 730, and the fourth communication device 740 may be telephones, wired broadcast consoles, dispatch stations, and other devices.

Further, the remote docking station system also includes a printer module 800 arranged in the remote docking station 10. The printer module 800 is connected to the operator workstation module 110 for printing the monitoring information in the operator workstation module 110 to monitor The information is saved for subsequent analysis.

It should be noted that: the environment of the remote shutdown system in the embodiment of the present invention satisfies: background noise does not exceed 65dB; under normal lighting conditions, the average illuminance is not less than 300Lux; under normal lighting fault conditions in a single row, the illuminance of the core operating area Not less than 200Lux; and the cable entry method of all equipment in the remote shutdown station is the downward entry method, which effectively improves the beauty and comfort of the room. The environment of the above-mentioned remote shutdown system meets the requirements of human factors index, provides a good operation and maintenance environment for operators, and achieves the technical effect of effectively reducing the probability of human failure.

Further, with reference to Figure 3, taking the first operator workstation 110 as an example, the first operator workstation 110 includes 4 widescreen displays 141 and 4 safety-level operation terminals 142, and 4 widescreen displays 141 are used to receive and display monitoring Information, and transmit the security level monitoring information in the monitoring information to 4 security level operation terminals 142, 4 security level operation terminals 142 are used to receive and process security level monitoring information, and 4 widescreen displays 141 and 4 security levels The operating terminal 142 is the same as the man-machine interface of the operator workstation in the main control room, which improves the adaptability and human-factor performance of the human-machine interface, and reduces the probability of human-factor failure. It should be noted that: 4 safety-level operation terminals 142 are placed on the horizontal desktop of each workstation in a horizontal tilt, and the tilt angle meets the requirements of human factors engineering. Among them, the 4 widescreen displays 141 are functional level 3 items (F-SC3 ), the four security level operation terminals 142 are functional level 1 items (F-SC1). It should be understood that the second operator workstation 120 and the crew leader workstation 130 also have the above structure.

Further, with reference to Figure 4, the automatic fire alarm system graphic workstation module 400 includes an automatic fire alarm control unit 410 and a graphic workstation unit 420. The input terminal of the automatic fire alarm control unit 410 and the fire detection set in various locations of the nuclear power plant 910 is connected to receive the fire information monitored by the fire detector 910. The fire information includes information about the room where the fire occurred and fire information. The output of the automatic fire alarm control unit 410 is connected to the graphic workstation unit 420 and each of the nuclear power plant. The on-site simulation panel 920 is connected to the local simulation panel 920, which is used to transmit the fire information to the graphic workstation unit 420 and display it in graphic form for the operator to understand the fire situation. It is also used to synchronously transmit the fire information to the local simulation panel 920. The on-site simulation panel 920 sends out sound and light alarm information, instructs and maintains the room information where the fire occurs, and prompts the operator to pay attention, so as to understand the fire situation in time and monitor the development of the fire. Through the automatic fire alarm graphic workstation module 400, it is of great significance to effectively monitor the fire in the power plant when the main control room cannot be accommodated due to the earthquake and the remote shutdown system is evacuated.

Furthermore, with reference to Figure 5, the cable path of the remote shutdown station system and the cable path of the main control room are independent of each other. It can be seen from the figure that in one of the networks, there are 3 network cabinet switches and 2 remote shutdowns. Stacking station switch, 2 main control room switches, one technical support center switch and one computer room switch, 2 remote shutdown station switches and 1 network cabinet switch form a loop, 2 main control room switches and 2 network cabinet switches In a loop, one of the main control room switches is connected to the computer room switch through the technical support center switch. It can be seen from the figure that the remote shutdown station switch and the main control room switch are not directly connected, ensuring the remote shutdown station system The cable path and the cable path in the main control room are independent of each other, meeting the requirements of regulations and standards, and further improving the safety of nuclear power plant operation.

Example two

The present invention also provides a method for setting a remote shutdown station of a nuclear power plant, with reference to Figure 6, including:

Step S1. Set up a remote shutdown station 10 on the unconventional inspection and evacuation path of the safety plant; further ensure the safe operation of the nuclear power plant remote shutdown station system;

Step S2. The operator work module 100 is established in the remote shutdown station 10 to enable it to receive and process the same monitoring information as the main control room; the monitoring function and monitoring range of the nuclear power plant remote shutdown station system are enhanced, and the monitoring The reliance on local operation solves the problem that some process system logic must be forced to be automatically automatically switched to the remote shutdown station due to limited monitoring means;

Step S3: Switch to the operator work module 100 or the main control room according to the switching instruction to process the monitoring information. The switching command is controlled by the three switching units and the logic control cabinet. When at least two switching units issue the command to switch to the operator work module 100, switch to the operator work module 100 to receive and process monitoring information; and When at least two switching units issue instructions to switch to the main control room, they switch to the main control room man-machine interface to receive and process monitoring information. It should be noted that when at least two switching units issue a switch to the main control room instruction, switch to the main control room to monitor information for receiving and processing. And when at least two switching units issue the instruction to switch to the operator work module 100, the main control room control command is automatically blocked, and the monitoring information cannot be processed. The main control room operator workstation is automatically in browse mode and the operation authority cannot be forced. Log in and execute the control function, which effectively reduces the probability of false commands issued by the main control room during the period of non-residential period and affects power plant safety. But what needs to be explained is: when the main control room control command is automatically locked, the shutdown button in the main control room can work normally. It is used for shutdown and shutdown in emergency situations, ensuring that the main control room can still be the first time in emergency situations The shutdown and shutdown have further ensured the safety of nuclear power plant operations.

Example three

The present invention also provides a method for commissioning a nuclear power plant remote shutdown station, which includes the following steps:

1) When the main control room cannot stay in the abnormal state of the nuclear power plant, quickly press the emergency shutdown and shutdown buttons in the main control room to keep the unit in a relatively safe state;

2) The main control room operator evacuated the main control room to the remote shutdown station, switched the switching unit components to the remote shutdown station mode in the evacuation path and the remote shutdown station, blocked the DCS signal of the main control room, and effectively reduced the failure of the main control room. Probability of issuing false orders during the stay to avoid affecting the safety of the power plant;

3) In the remote shutdown station, the operator uses the operator authority to log in to the first operator workstation 110 and the second operator workstation 120, and uses the crew chief authority to log in to the crew commander workstation 130, and simultaneously controls the first operator workstation 110 and the second operator workstation. The safety-level operation terminal on the worker workstation 120 is switched to the operation mode through its own switch;

4) Use workstations to perform power plant monitoring and control functions to make the unit withdraw and stabilize in the refueling cold shutdown state.

Preferably, the switching unit assembly includes a first switching unit, a second switching unit, and a third switching unit, the first switching unit is arranged in the remote docking station, the second switching unit and the third switching unit Are respectively arranged outside the remote shutdown station;

In the step 2), at least two of the three switching units only need to be switched to the remote shutdown station mode to block the DCS signal of the main control room.

Preferably, the remote docking station system includes door 1 and door 2 arranged oppositely, the second switching unit is arranged on the wall outside the first door, and the third switching unit is arranged on the wall outside the second door on.

In summary, the present invention proposes a nuclear power plant remote shutdown station system and its commissioning method, using digital control system technology and equipment, the remote shutdown station system receives and processes the same monitoring as the main control room operator workstation Information, enhanced the monitoring function and monitoring scope of the remote shutdown station, reduced the dependence on on-site operation, and solved the problem that some process system logic must be forced to be automatically automatically switched to the remote shutdown station due to limited monitoring means; The crew leader workstation better meets the requirements of operation organization and operation and maintenance methods; and the crew leader workstation is located behind the operator workstation, which is beneficial for the crew leader to control the power plant monitoring situation; a hardware shutdown module is designed in the remote shutdown station system , Can perform the function of fast shutdown; and the three switching units are placed in different areas, which effectively reduces the probability of common cause failure of the switch; the access control is designed in the remote shutdown station system to effectively prevent unauthorized personnel from entering the remote shutdown Station, which affects the safety of remote shutdown stations and power plants; and the access control adopts a design scheme that the access control is invalid in the case of power loss, so as to avoid the situation that the remote shutdown station cannot be entered due to power loss; the invention also sets up a fire alarm system graphic and text The workstation meets the fire monitoring requirements; the present invention also designs the main control room to automatically lock when the switch to the remote shutdown station command is executed, which effectively reduces the probability of the main control room issuing false commands during the non-resident period and thus affects the safety of the power plant; and The equipment cables in the shutdown station system adopt the way of lower entry, which effectively improves the aesthetics and comfort of the room. The cable path of the remote shutdown station is relatively independent of the cable path of the main control room, which meets the requirements of regulations and standards, and further improves the safety of nuclear power plant operation.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims (15)

1. A remote shutdown station system for a nuclear power plant, which is characterized by comprising: a remote shutdown station arranged on the unconventional inspection and plant evacuation path of a safety plant, an operator workstation module arranged in the remote shutdown station, and Switching unit components arranged inside and outside the remote shutdown station;

   The operator workstation module is connected to the DCS monitoring network of the nuclear power plant, and is used to receive and process the same monitoring information as the main control room when the main control room cannot be accommodated;

   The switching unit assembly is connected to the logic control cabinet, and is used to issue switching instructions to the logic control cabinet according to different states of the nuclear power plant. The logic control cabinet is in communication connection with the main control room and the operator workstation module for receiving switching After the instruction and logical processing of the switching instruction, it is switched to the main control room or the operator workstation module to receive and process the monitoring information in the DCS monitoring network of the nuclear power plant.
2. The remote docking station system according to claim 1, wherein the switching unit assembly includes a first switching unit, a second switching unit, and a third switching unit, and the first switching unit, the second switching unit, The third switching unit is connected to the logic control cabinet, and the logic control cabinet is used for: in the abnormal state of the nuclear power plant, the main control room cannot reside and at least two switching units issue instructions to switch to the operator workstation module , Switch to the operator workstation module to receive and process the monitoring information, and at the same time, the main control room is automatically locked; in the normal state of the nuclear power plant and at least two switching units issue instructions to switch to the main control room, switch to The main control room receives and processes monitoring information, and at the same time, the operator workstation module is automatically locked.
3. The remote shutdown station system according to claim 2, wherein the first switching unit is arranged in the remote shutdown station, the second switching unit is arranged outside the remote shutdown station, and the The third switching unit is arranged outside the main control room, and is used to avoid the simultaneous failure of three switching units caused by accidents in the same area.
4. The remote shutdown station system according to claim 1, wherein the operator workstation module includes a first operator workstation, a second operator workstation, and a crew leader workstation, and the crew leader workstation is used to receive and The control room operator’s workstation has the same monitoring information and monitors the monitoring information; the crew leader’s workstation can also be used to authorize the first and second operator workstations; the first and second operator workstations The second operator workstation is used to receive the same monitoring information as the operator workstation in the main control room and process part of the monitoring information, and process all the monitoring information after authorization by the crew leader workstation.
5. The remote shutdown station system according to claim 4, wherein the first operator workstation, the second operator workstation, and the crew leader workstation respectively include 4 widescreen displays and 4 safety-level operation terminals. 4 widescreen displays are used to receive and display the monitoring information, and transmit the security level monitoring information in the monitoring information to the 4 security level operation terminals, and the 4 security level operation terminals are used to receive and process the Safety level monitoring information, and the 4 widescreen displays and 4 safety level operation terminals are the same as the man-machine interface of the operator workstation in the main control room.
6. The remote shutdown station system according to any one of claims 1 to 5, wherein the remote shutdown station system further comprises an automatic fire alarm system graphic workstation module arranged in the remote shutdown station, the The graphic workstation module of the automatic fire alarm system includes an automatic fire alarm control unit and a graphic workstation unit. The input end of the automatic fire alarm control unit is connected with the fire detectors arranged at various positions of the nuclear power plant, and is used for receiving the fire detectors. Monitored fire information; the output of the automatic fire alarm control unit is connected to the graphic workstation unit and the local simulation panel set up throughout the nuclear power plant, and is used to transmit the fire information to the graphic workstation unit for graphic The form display is used for the operator to understand the fire situation, and is also used to synchronously transmit the fire information to the on-site simulation panel for the on-site simulation panel to send out sound and light alarm information to remind the operator to pay attention.
7. The remote docking station system according to claim 6, wherein the remote docking station further comprises door 1 and door 2 for allowing authorized operators to enter the remote docking station. The door number is arranged on the side close to the graphic workstation module of the automatic fire alarm system, and the door number two is arranged on the side close to the operator workstation module to improve the safety of the remote shutdown station system.
8. The remote shutdown station system according to any one of claims 4 to 5, wherein the remote shutdown station system further comprises a first communication device and a second communication device arranged in the remote shutdown station , A third communication device and a fourth communication device, the first communication device and the third communication device are respectively arranged on the left side of the first operator workstation and the crew leader workstation, and the second communication device is arranged on the On the right side of the second operator workstation, the fourth communication device is arranged between the first operator workstation and the second operator workstation for the operator to communicate with the outside world.
9. The remote docking station system according to any one of claims 1 to 5, wherein the remote docking station system further comprises a printer module arranged in the remote docking station, and the printer module is connected to the The operator workstation module is used to print the monitoring information in the operator workstation module.
10. The remote shutdown station system according to any one of claims 1 to 5, wherein the remote shutdown station system further comprises an emergency shutdown module arranged in the remote shutdown station, and the emergency shutdown The stack module is connected to a stack shutdown circuit breaker for emergency shutdown.
11. The remote docking station system according to any one of claims 1 to 5, wherein the cable path of the remote docking station system and the cable path of the main control room are independent of each other.
12. The remote docking station system according to any one of claims 1 to 5, wherein the background noise of the remote docking station does not exceed 65dB;

    The average illuminance of the remote shutdown station under normal lighting conditions is not less than 300 Lux; under the normal lighting failure conditions of a single train, the illuminance of the core operation area is not less than 200 Lux;

    The cable entry mode of the equipment in the remote storage station is lower cable entry, which is used to improve the aesthetics and comfort of the remote storage station.
13. A method for commissioning a remote shutdown station of a nuclear power plant is characterized by comprising the following steps:

    1) When the main control room cannot stay in the abnormal state of the nuclear power plant, quickly press the emergency shutdown and shutdown buttons in the main control room to keep the unit in a relatively safe state;

    2) The main control room operator evacuates the main control room to the remote shutdown station, switches the switching unit component to the remote shutdown station mode in the evacuation path and the remote shutdown station, and blocks the DCS signal of the main control room;

    3) In the remote shutdown station, the operator uses the operator authority to log in to the first operator workstation and the second operator workstation, and uses the crew captain authority to log in to the crew commander workstation, and at the same time, log in to the first operator workstation and the second operator workstation The safety-level operation terminal switches to the operation mode through its own switch;

    4) Use workstations to perform power plant monitoring and control functions to make the unit withdraw and stabilize in the refueling cold shutdown state.
14. The method for commissioning a remote shutdown station of a nuclear power plant according to claim 13, wherein the switching unit assembly includes a first switching unit, a second switching unit, and a third switching unit, and the first switching unit is arranged at In the remote shutdown station, the second switching unit and the third switching unit are respectively arranged outside the remote shutdown station;

    In the step 2), at least two of the three switching units only need to be switched to the remote shutdown station mode to block the DCS signal of the main control room.
15. The method for commissioning a remote shutdown station of a nuclear power plant according to claim 14, wherein the remote shutdown station system includes gates No. 1 and No. 2 arranged oppositely, and the second switching unit is set at No. 1 On the wall outside the door, the third switching unit is set on the wall outside the second door.

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